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Round tile x and y and reuse w and h

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This commit is contained in:
ahocevar
2018-11-14 19:28:09 +01:00
committed by Tim Schaub
parent 5fffb67242
commit 8eb48604e9
1 changed files with 4 additions and 4 deletions
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src/ol/renderer/canvas/TileLayer.js
+4 -4
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@@ -267,15 +267,15 @@ class CanvasTileLayerRenderer extends CanvasLayerRenderer {
const currentTilePixelSize = tileSource.getTilePixelSize(currentZ, pixelRatio, projection); const currentTilePixelSize = tileSource.getTilePixelSize(currentZ, pixelRatio, projection);
const currentResolution = tileGrid.getResolution(currentZ); const currentResolution = tileGrid.getResolution(currentZ);
const currentScale = currentResolution / tileResolution; const currentScale = currentResolution / tileResolution;
const w = currentTilePixelSize[0] * currentScale;
const h = currentTilePixelSize[1] * currentScale;
const tileGutter = tilePixelRatio * tileSource.getGutterForProjection(projection); const tileGutter = tilePixelRatio * tileSource.getGutterForProjection(projection);
const tilesToDraw = tilesToDrawByZ[currentZ]; const tilesToDraw = tilesToDrawByZ[currentZ];
for (const tileCoordKey in tilesToDraw) { for (const tileCoordKey in tilesToDraw) {
const tile = tilesToDraw[tileCoordKey]; const tile = tilesToDraw[tileCoordKey];
const tileExtent = tileGrid.getTileCoordExtent(tile.getTileCoord(), tmpExtent); const tileExtent = tileGrid.getTileCoordExtent(tile.getTileCoord(), tmpExtent);
const x = tilePixelRatio * (tileExtent[0] - canvasExtent[0]) / tileResolution; const x = Math.round(tilePixelRatio * (tileExtent[0] - canvasExtent[0]) / tileResolution);
const y = tilePixelRatio * (canvasExtent[3] - tileExtent[3]) / tileResolution; const y = Math.round(tilePixelRatio * (canvasExtent[3] - tileExtent[3]) / tileResolution);
const w = currentTilePixelSize[0] * currentScale;
const h = currentTilePixelSize[1] * currentScale;
this.drawTileImage(tile, frameState, layerState, x, y, w, h, tileGutter, z === currentZ); this.drawTileImage(tile, frameState, layerState, x, y, w, h, tileGutter, z === currentZ);
this.renderedTiles.push(tile); this.renderedTiles.push(tile);
} }